- The patient has received 1 to 3 prior lines of therapy. By definition, a single line of therapy may consist of 1 or more agents, and may include induction, hematopoietic stem cell transplantation, and maintenance therapy. Radiotherapy, bisphosphonate, or a single short course of steroids (ie, less than or equal to the equivalent of dexamethasone 40 mg/day for 4 days) would not be considered prior lines of therapy